BR112015005763A2 - método e aparelho para compensar variações de iluminação em uma sequência de imagens - Google Patents

método e aparelho para compensar variações de iluminação em uma sequência de imagens

Info

Publication number
BR112015005763A2
BR112015005763A2 BR112015005763A BR112015005763A BR112015005763A2 BR 112015005763 A2 BR112015005763 A2 BR 112015005763A2 BR 112015005763 A BR112015005763 A BR 112015005763A BR 112015005763 A BR112015005763 A BR 112015005763A BR 112015005763 A2 BR112015005763 A2 BR 112015005763A2
Authority
BR
Brazil
Prior art keywords
variations
compensating
sequence
lighting
images
Prior art date
Application number
BR112015005763A
Other languages
English (en)
Inventor
Touze David
Hiron Franck
Bordes Philippe
Olivier Yannick
Original Assignee
Thomson Licensing
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson Licensing filed Critical Thomson Licensing
Publication of BR112015005763A2 publication Critical patent/BR112015005763A2/pt

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/90—Dynamic range modification of images or parts thereof
    • G06T5/94—Dynamic range modification of images or parts thereof based on local image properties, e.g. for local contrast enhancement
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/40—Image enhancement or restoration using histogram techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/117—Filters, e.g. for pre-processing or post-processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
    • H04N19/139—Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/14—Coding unit complexity, e.g. amount of activity or edge presence estimation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/189—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding
    • H04N19/196—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/597—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding specially adapted for multi-view video sequence encoding
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10016—Video; Image sequence

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computing Systems (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

resumo "método e aparelho para compensar variações de iluminação em uma sequência de imagens". de modo a considerar as variações da iluminação local em uma cena, a invenção propõe um método para a compensação das variações de iluminação, no qual as distribuições são determinadas para cada bloco de uma imagem (ou visualização) e, de modo a evitar a perda da eficiência da codificação do vídeo, uma função de mapeamento com base na distribuição é calculada automaticamente por um aparelho remoto, tal como um decodificador, a partir somente da informação disponível nesse aparelho quando decodificando um bloco atual da sequência de imagens. a presente invenção se refere também a um método e dispositivo de codificação e/ou decodificação de uma sequência de imagens que compreende mecanismo configurado para implementar o método de compensação das variações de iluminação de acordo com a invenção.
BR112015005763A 2012-09-19 2013-08-27 método e aparelho para compensar variações de iluminação em uma sequência de imagens BR112015005763A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP12306132.7A EP2733933A1 (en) 2012-09-19 2012-09-19 Method and apparatus of compensating illumination variations in a sequence of images
PCT/EP2013/067719 WO2014044504A1 (en) 2012-09-19 2013-08-27 Method and apparatus for compensating illumination variations in a sequence of images

Publications (1)

Publication Number Publication Date
BR112015005763A2 true BR112015005763A2 (pt) 2017-07-04

Family

ID=47008436

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112015005763A BR112015005763A2 (pt) 2012-09-19 2013-08-27 método e aparelho para compensar variações de iluminação em uma sequência de imagens

Country Status (7)

Country Link
US (1) US9870606B2 (pt)
EP (2) EP2733933A1 (pt)
JP (1) JP6640559B2 (pt)
KR (1) KR102136905B1 (pt)
CN (1) CN104641636B (pt)
BR (1) BR112015005763A2 (pt)
WO (1) WO2014044504A1 (pt)

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US10192295B2 (en) * 2016-11-09 2019-01-29 AI Analysis, Inc. Methods and systems for normalizing images
KR20180074000A (ko) * 2016-12-23 2018-07-03 삼성전자주식회사 비디오 디코딩 방법, 이를 수행하는 비디오 디코더, 비디오 인코딩 방법, 및 이를 수행하는 비디오 인코더
FR3075540A1 (fr) * 2017-12-15 2019-06-21 Orange Procedes et dispositifs de codage et de decodage d'une sequence video multi-vues representative d'une video omnidirectionnelle.
EP3518543A1 (en) 2018-01-26 2019-07-31 Thomson Licensing Illumination compensation flag in frame rate up-conversion with template matching
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Also Published As

Publication number Publication date
JP2015532061A (ja) 2015-11-05
EP2733933A1 (en) 2014-05-21
JP6640559B2 (ja) 2020-02-05
KR20150084767A (ko) 2015-07-22
CN104641636A (zh) 2015-05-20
EP2898682A1 (en) 2015-07-29
CN104641636B (zh) 2018-04-10
WO2014044504A1 (en) 2014-03-27
US9870606B2 (en) 2018-01-16
US20150248746A1 (en) 2015-09-03
KR102136905B1 (ko) 2020-07-22

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Legal Events

Date Code Title Description
B15K Others concerning applications: alteration of classification

Ipc: H04N 7/00 (2011.01)

B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B25G Requested change of headquarter approved

Owner name: THOMSON LICENSING (FR)

B25A Requested transfer of rights approved

Owner name: INTERDIGITAL VC HOLDINGS, INC. (US)

B15K Others concerning applications: alteration of classification

Free format text: A CLASSIFICACAO ANTERIOR ERA: H04N 7/00

Ipc: H04N 19/117 (2014.01), H04N 19/139 (2014.01), H04N

B06U Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]
B11B Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements